Bicycle-motor.



Patented Oct. 7, I902r B. s. ANDERSON.

BICYCLE MOTOR.

(Application flied A151. 4, 1901.1

(No Model.)

UNITED STATES PATENT OFFICE.

ROBERT SCOTT ANDERSON, OF TORONTO, CANADA.

BICYCLE-MOTOR.

SPECIFICATION forming part of Letters Patent No. 710,831, dated October 7, 1902.

Application filed April 4., 1901. Serial No. 54,339. (No model.)

To all whom it may concern.-

Be it known thatl, ROBERT SooTT ANDER- SON, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Bicycle-Motors, of which the following is a specification.

My invention relates to improvements in bicycle-motors; and the object of the invention is to devise a form of motor readily adaptable to a bicycle which will be simple, compact, and easily operated. To carry out these objects my invention is constructed and arranged in detail, as hereinafter more particularly explained, reference being had to the accompanying drawings, in which- Figure 1 is a horizontal sectiouthrough the engine, main shaft, and fly wheel casing. Fig. 2 is a sectional elevation.

A is the front standard of the bicycle. is the rear standard, and O the rear forks.

F is the fly-wheel casing, which is made in two parts suitably connected together in the center of the periphery by the lugsfand bolts f extending therethrough.

f is a plate attached to or forming part of the casing F at the front thereof.

G is the cylinder of the engine, which at the lower end is provided with a flange g, by which it is secured to the plate Gis the head of the cylinder, which is suitably screwed onto the threaded outer end of the upper portion of the cylinder, as indicated in Fig. 3. The sleeve g of the head extends down over the major portion of the cylinder. Into the head G extends at the front side the end of the exhaust-pipe 2. 4: is the inlet pipe, which extends into the head G of the cylinder diametrically opposite the exhaustpipe 2. The upper end of the head G is provided with a socket 9 into which fits the lower-end of the lower reach A.

G is the piston, which is connected by the pins g to the piston-rod which has formed at the outer end of it a ring 9 in which works the eccentric g, attached to the 1101- low engincshaft ll. The hollow engineshaft II extends through the sides of the easing,being journaled in suitable ball-bearings at the outer ends, as indicated.

I is the pedaLshaft, which extends into the engine-shaft and is journaled at the ends in suitable ball-bearings, the cones of which are situated within the cones of the bearings of the engineshaft in the manner now described. 7

h hare the cones of the engine-shaft, which are suitably screwed onto the end of the same. The halls h h are located between the cones h h and the outside cones 71 7L2, held in suitable annular flanges formed on the two sides of the'casing F. The cones h h extend outwardly, so as to form outer cups 7% h, between which and the cones h 715 on the pedal-shaft are located the balls h H is a sprocket-wheel having an opening extending therethrough internally threaded and fitting on the threaded end of the conebearing h at one end of the engine-shaft.

H is a brake -wheel which is provided with a central opening internally threaded and fitting onto the corresponding end of the double cone 7?. at the opposite end of the shaft.

H is a sprocket-wheel secured onto the end of the pedalaxle I, which is provided with the usual pedals 'i.

J J are the fly-wheels, which are suitably secured on the hollow engine-shaft, as indicated.

The eccentric g hereinbefore described, is secured on the hollow engine-shaft in the following manner: A hole g is made in the eccentric, which serves the double purpose of lightening as well as permitting the eccentric to be'placed in position-that is to say, slipped over the annular flanges g attached to or forming part of the hollow engine-shaft. The eccentric is then secured in position by suitable pins g". 'I may finally mention the eccentric rotates on ball-bearings between it and the ring on the end of the piston-rod.

- hat I claim as my invention is l. The, combination with the hollow engine-shaft suitably journaled in the casing and provided with annular flanges and the cylinder and piston, of the eccentric having an opening therein and pins extending therethrough for securing it to the annular flanges and the piston-rod having a ring-shaped end fitting over the eccentric and the opposite end suitably connected to the piston as and for the purpose specified.

2. The combination with the frame and shaft and provided with suitable end bearings and suitable connecting driving means 10 between the pedal-axle and the engine-shaft as specified.

suitable bearings at the interior of the lower i ROBERT SCOTT ANDERSON. portion thereof, of the hollow engine-shaft \Vitnesses:

suitably journaled in such bearings and the B. BOYD,

pedal-axle extending through the engine- L. TRIMBLE. 

